/*
 *  Copyright 2008-2010 the original author or authors.
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *       http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  under the License.
 */
package org.openaecfm.spf.io.measure;

import org.openaecfm.model.measure.DerivedUnit;
import org.openaecfm.model.measure.DerivedUnitElement;
import org.openaecfm.model.measure.DerivedUnitEnum;
import org.openaecfm.spf.io.AbstractEntityInstanceInputImpl;
import org.openaecfm.spf.io.IAppDataManager;
import org.openaecfm.spf.io.IEntityInstanceOutput;
import org.openaecfm.spf.model.DollarParameter;
import org.openaecfm.spf.model.EntityInstance;
import org.openaecfm.spf.model.EntityInstanceNameParameter;
import org.openaecfm.spf.model.EnumerationParameter;
import org.openaecfm.spf.model.ListParameter;
import org.openaecfm.spf.model.NodeType;
import org.openaecfm.spf.model.Parameter;
import org.openaecfm.spf.model.SimpleEntityInstance;
import org.openaecfm.spf.model.StringParameter;

public final class DerivedUnitIO extends
		AbstractEntityInstanceInputImpl<DerivedUnit> implements
		IEntityInstanceOutput<DerivedUnit> {
	/**
	 * {@inheritDoc}
	 */
	@Override
	public String exportSPF(DerivedUnit pojo, IAppDataManager appDataManager) {
		SimpleEntityInstance ei = new SimpleEntityInstance("IFCDERIVEDUNIT",
				appDataManager.getName(pojo));

		// Set Elements
		ListParameter elements = new ListParameter();
		for (DerivedUnitElement element : pojo.getElements()) {
			elements.add(new EntityInstanceNameParameter(
					appDataManager.getName(element)));
		}
		ei.addParameter(elements);

		// Set UnitType
		EnumerationParameter unittype = new EnumerationParameter(
				pojo.getUnitType());
		ei.addParameter(unittype);

		// Set UserDefinedType
		if (pojo.getUserDefinedType() == null) {
			ei.addParameter(DollarParameter.getInstance());
		} else {
			ei.addParameter(new StringParameter(pojo.getUserDefinedType(),
					StringParameter.UTF_8));
		}

		return ei.toString();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	protected DerivedUnit doCreateObject() {
		return new DerivedUnit();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void resolveReferenceParameter(EntityInstance ei, DerivedUnit pojo,
			IAppDataManager appDataManager) {
		SimpleEntityInstance sei = (SimpleEntityInstance) ei;

		// Set Elements
		ListParameter elements = (ListParameter) sei.getParameter(0);
		for (Parameter p : elements) {
			EntityInstanceNameParameter n = (EntityInstanceNameParameter) p;
			pojo.getElements().add(
					(DerivedUnitElement) appDataManager.getObject(n
							.toInstanceName()));
		}
	}

	@Override
	protected void resolveNotReferenceParameter(EntityInstance ei,
			DerivedUnit pojo) {
		SimpleEntityInstance sei = (SimpleEntityInstance) ei;

		// Set UnitType
		EnumerationParameter unittype = (EnumerationParameter) sei
				.getParameter(1);
		pojo.setUnitType(DerivedUnitEnum.valueOf(unittype.toEnumString()));

		// Set UserDefinedType
		Parameter userdt = sei.getParameter(2);
		if (userdt.getNodeType() == NodeType.STRING) {
			StringParameter s = (StringParameter) userdt;
			pojo.setUserDefinedType(s.toUTF8());
		}
	}
}
